Forced-draft mechanism for stoves.



J. CYBULSKI. FORGED DRAFT MECHANISM FOR STOVES. APPLICATION FILED JULY15, 1914.

Patented Jan.19, 1915.

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JAN CYBULSKI,

OF KENT, PENNSYLVANIA.

FORCED-DRAFT MECHANISM FOR STOVES.

Specification of Letters Patent.

Patented Jan. 19, 1915.

Application filed JnIy 15, 1914. Seria1 No. 851,116.

T 0 all whom it may concern Be it known that 1, JAN CYBULSKI, a subjectof the Czar of Russia, residing at Kent, in the county of Indiana andState of Pennsylvania, have invented certain new and useful Improvementsin Forced-Draft Mechanism for Stoves, of which the following is aspecification.

This invention relates to certain new and useful improvements in forceddraft mechanism for stoves.

The primary object of this invention is to provide a means in connectionwith a stove whereby the combustion therein may be accelerated and theperfect operation of the stove enhanced thereby.

A further object is to provide a driven suction device in communicationbetween the combustion chamber of a stove and the outlet flue or chimneyand adapted upon operation to create a forced draft forthe fire for thepurpose of rekindling the fire or making the same burn with betterefficiency.

A still further object is to provide a suction fan device operable by aturn crank and connected by conduits between the combustion chamber of astove and outlet, and whereby a draft may be forced through the grateand fire of the stove whenever desired.

With these general objects in view and others that will appear as thenature of the invention is better understood, the same consists in thenovel construction, combination and arrangement of parts hereinaftermore fully described and then claimed.

In the accompanying drawings forming a part of this application andwherein like numerals of reference designate like parts throughout theseveral views: Figure 1 is a side elevation of a stove provided with thepresent device and with a portion of the chimney broken away and insection. Fig. 2 is a central horizontal sectional view taken through thecasing of the device. Fig. 3 is a vertical transverse sectional viewtaken upon line IIIIH of Fig. 2, and, Fig. 4c is a vertical transversesectional View taken upon line IV-1V of Fig. 2.

Referring more in detail to the drawings, the present invention broadlyconsists of a suction device contained within the casing 10 and mountedby means of a bracket 11 upon a stove 12, within which a forced draft isadapted to be effected by the device. The casing 10 is provided with aninlet pipe 13 tapped into the end wall 14 of the casing,

which wall is positionedadjacent the stove while said pipe 13 enters thestove at any convenient point above the fire box grate thereof.

An outlet pipe 15 is connected between the end wall 16 of the casing andthe chimney or fine 17 while a by-pass pipe 18 communicates between theoutlet pipe 15 and the casing 10 through the side 19 of the latter.

A transverse bracket 20 is secured within the casing between theopposite sides thereof while an upright post 21 is likewise positionedtherein and spaced from the said bracket. A shaft 22 is journaled inbearings 23 carried by the top of said. post and the upper side of saidbracket and has one end extending outwardly of the casing and providedwith a pinion 24: mounted thereon. A turn crank 25 is rotatably-mountedas at 26 to the end 16 of the casing and is provided with a relativelylarger gear or pinion 27 in constant mesh with the aforesaid pinion 2Aand whereupon the shaft 22 may be revolved together with the fan 28carried by said shaft and within the casing. The bracket 20 is providedwith an arm 29 having a counter-shaft 30 j ournaled therein-and also atthe opposite ends of the casing while the projecting end' of saidcounter-shaft is provided with a small pinion 31 exterior-1y of thecasing and in constant mesh with the gear 27 of the crank. A fan 32 ofsmaller dimensions than the fan 28 is secured to a revoluble shaft 33within the casing and upon the end wall 14% thereof and is journaled ina plane above the axis of the fan 28 and directly over the inlet pipe13. The counter-shaft 30 is provided with a pinion 34 in alinement witha pinion 35 carried by the shaft 33 while an idler 36 also carried bythe end 14 is in constant mesh with and positioned between the saidpinions 34: and 35.

The device is operated by turning the crank 25 which results insimultaneously revolving the fans 28 and 32 within the easing 10. Asuction is thus created in the inlet pipe 13 and the same having anentrance from the stove at a piont above the burning grate thereof, itwill be seen that an upward draft is created through the burning fuelupon the grate, the air being drawn from beneath the grate and thesupply thereof being regulated by the stove door 37. The air drawnthrough the stove and into the casing 10 by the fans is exhaustedthrough the by-pass 18 and end outlet 15 into the flue or chimney 17,the natural draft of which latter augments the action of the fans inclearing the casing. It is to be noted that the usual outlet stove pipemay be employed as a stove or the pipes employed with the present devicemay be solely utilized for discharging the productions of combustionfrom the stove.

The device is serviceable at any time desired for increasing the draftin the fire pot and especially when a new fire is being kindled as wellas when new fuel is being added to the fire or when the fire dies downand needs revivin While the forms of the invention herein shown anddescribed are what are believed to be preferable embodiments thereof, itis nevertheless to be understood that various forms, modifications andarrangements of the parts as shown may be made without departing fromthe spirit and scope of the invention as claimed.

What I claim as new is 1. A device of the class described comprising incombination with a stove and a flue, a casing positioned therebetween,piping between said casing and flue and the combustion chamber of thestove, a transverse bracket and a post within said casing, alongitudinally-positioned fan journaled upon said, bracket and post, arelatively smaller fan journaled within said casing above the axial lineof said first-named fan in the samevertical plane, operating meanscommon to both of said fans positioned exteriorly of the casing, and aby-pass outlet pipe between one side of said casing and the pipingbetween said casing and flue.

2. A draft device comprising in combination with a stove and a chimney,and a casing positioned therebetween, of an inlet pipe for said casingcommunicating with the combustion chamber of the stove, an outlet pipefor said casing communicating between one end of said casing and saidchimney, a bypass outlet pipe between one side of said casing and saidoutlet pipe, a relatively small fan journaled within said casing in aplane above said larger fan, an operative turn crank eXteriorly of saidcasing, and operative pinion connections between said crank and both ofsaid fans whereby simultaneous operation of said fan is effected in theexhausting operation. 7

In testimony whereof I aifix my signature in presence of two witnesses.

JAN CYBULSKI.

Witnesses STOIN ISLOW MoMoT, Pom GEneURYo.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

